It looks as if Event no. 9 has started - rowing, swimming, sailing? And away from the main action, do you think that workman is posing in a fetching manner especially for the photographer?
Date: Late 1930s??
NLI Ref: EAS_3870
You can also view this image, and many thousands of others, on the NLI’s catalogue at catalogue.nli.ie
Owner: National Library of Ireland on The Commons
Source: Flickr Commons